Występowanie wędrownych i reofilnych gatunków ryb i minogów w rzekach północnej Polski w świetle historycznych materiałów do początku XX wieku
Journal Title: Roczniki Naukowe Polskiego Związku Wędkarskiego - Year 2015, Vol 28, Issue
Abstract
The paper contains an analysis of historical sources of the distribution of migratory and rheophilic fish and lamprey species in rivers of northern Poland. In the past, most of these rivers and streams had rich fish fauna, which was manifest in rich catches. Several migratory species, e.g. Atlantic sturgeon and Atlantic salmon, are now extinct. In addition, some local populations of several rheophilic species have disappeared, while the species of vimba, barbel, nase and burbot are the most threatened. Brown trout has always been the most common species. However, as the historical materials relate primarily to commercial species, it is difficult to analyse them as regards other, smaller species. Generally, the status of the presently described species is worse than those of historical data. Dams and stream channel regulation are the main causes of the decline. These habitat changes were most intense in the late 19th and early 20th centuries, but effects are visible today.
Authors and Affiliations
Grzegorz Radtke, Rafał Bernaś, Michał Skóra
Keywords
Related Articles
- EP ID EP72522
- DOI 10.12823/sapaa.0860-648X.15006
- Views 140
- Downloads 0
Uwarunkowania i prowadzenie gospodarki rybacko-wędkarskiej w zbiornikach zaporowych
Specific conditions in dam reservoirs and the basis of their classification have been discussed. Regularities in the forming of ichthyofauna of the Włocławski, Zegrzyński and Siemianówka reservoirs were shown as an examp...
Ichtiofauna systemu Rzeki Iny
The fish fauna of the Ina River system was investigated in 2006–2007. At 54 sampling sites a total of 4912 individuals representing 33 species were collected by electrofishing. The studied tributaries were human-impacted...
Ichtiofauna systemu rzeki Osy
The aim of this study was to describe the distribution and abundance of fish species in the Osa River system – a right-bank tributary of the lower Vistula River. Additionally, the main environmental background and threat...
Wpływ reintrodukcji pstrąga potokowego (Salmo trutta m. fario L.) w środkowej Polsce na populacje innych gatunków ryb
Brown trout reintroduction in Central Poland, conducted since early 1980s, has raised concerns that trout is responsible for the disappearance of some species, like lampreys, minnows, loach and gudgeon. As a result, trou...
Możliwości zastosowania europejskiego wskaźnika ichtiologicznego (EFI+) do oceny stanu ekologicznego rzek Polski
The European Fish Index EFI+ is a multimetric index to be applied at the continental scale. It consists of two pairs of metrics developed separately for Salmonid and Cyprinid river zones, producing two specific indices....